Software / code / prosody-modules
Annotate
mod_graceful_shutdown/README.markdown @ 2491:5fbca7de2088
mod_smacks: Send out more ack requests where needed
Under some circumstances it was possible that more than "max_unacked_stanzas"
where left in the outgoing stanza queue without forcing an ack.
This could happen, when more stanzas entered the queue while the last ack request
was still unanswered.
Now the test "#queue > max_unacked_stanzas" is done upon receiving
an ack as well as when sending out stanzas, which fixes this bug.
| author | tmolitor <thilo@eightysoft.de> |
|---|---|
| date | Sun, 12 Feb 2017 19:27:50 +0100 |
| parent | 2170:4652a112a4ba |
| child | 2818:88474dd1af48 |
| rev | line source |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
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1 This module is an experiment about a more graceful shutdown process. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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2 |
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Kim Alvefur <zash@zash.se>
parents:
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3 Why |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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4 === |
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5 |
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Kim Alvefur <zash@zash.se>
parents:
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6 When shutting down, a number of sessions, connections and other things |
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7 are teared down. Due to all these things happening very quickly, |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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8 sometimes eg client unavailable notifications don't make it to all |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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9 remote contacts because the server-to-server connections are teared down |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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10 just after. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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11 |
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Kim Alvefur <zash@zash.se>
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12 How |
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13 === |
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14 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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15 This module works by breaking the shutdown process into separate steps |
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16 with a brief pause between them. |
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17 |
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18 It goes something like this |
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19 |
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20 1. Stop accepting new client connections. |
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21 2. Close all client connections. |
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22 3. Fire event for everything else. |
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23 4. Tell `net.server` to quit the main loop. |
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24 5. ??? |
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25 6. Still here? Kill itself. |
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26 |
